Stumbled into this this morning. If you rest the toe portion of your boot on the driver foot rest, the heel of your boot will rest nicely on the passenger foot rest. It doesn't even have to be unfolded. There's enough of a nub sticking out to support your heel. Of course, if you have smaller feet, it probabaly won't work. Anyway, sounds silly, but when your are throwing down some serious miles, the slight position change, really helps.
WGW
WGW